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Registered: ‎05-07-2015

Canon 7D and Sigma 50mm AF 1.4 lens

Recently I upgraded my Canon EOS 7D with the new 2.0.5 firmware.  If I set the camera to manual and set any shutter speed, the best f-stop I can get on my Sigma 50mm AF 1.4 lens is f 5.6.  Previously I was able to set the f-stop to f 1.4.  Anyone have any idea what is causing this problem?

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